From: Andrew Trick Date: Wed, 18 Jul 2012 18:07:52 +0000 (+0000) Subject: Added unit test for PR13361: LSR + SCEV "hangs" on reasonably sized test. X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=2f3c326786152dbcdc0f3d295a85c3ec448c7438;p=oota-llvm.git Added unit test for PR13361: LSR + SCEV "hangs" on reasonably sized test. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160439 91177308-0d34-0410-b5e6-96231b3b80d8 --- diff --git a/test/Transforms/LoopStrengthReduce/2012-07-18-LimitReassociate.ll b/test/Transforms/LoopStrengthReduce/2012-07-18-LimitReassociate.ll new file mode 100644 index 00000000000..3793baccbbc --- /dev/null +++ b/test/Transforms/LoopStrengthReduce/2012-07-18-LimitReassociate.ll @@ -0,0 +1,517 @@ +; RUN: opt -loop-reduce -disable-output -debug-only=loop-reduce %s 2> %t +; RUN: FileCheck %s < %t +; REQUIRES: asserts +; +; PR13361: LSR + SCEV "hangs" on reasonably sized test with sequence of loops +; +; Without limits on CollectSubexpr, we have thousands of formulae for +; the use that crosses loops. With limits we have five. +; CHECK: LSR on loop %bb221: +; CHECK: After generating reuse formulae: +; CHECK: LSR is examining the following uses: +; CHECK: LSR Use: Kind=Special +; CHECK: {{.*reg\(\{\{\{\{\{\{\{\{\{}} +; CHECK: {{.*reg\(\{\{\{\{\{\{\{\{\{}} +; CHECK: {{.*reg\(\{\{\{\{\{\{\{\{\{}} +; CHECK: {{.*reg\(\{\{\{\{\{\{\{\{\{}} +; CHECK: {{.*reg\(\{\{\{\{\{\{\{\{\{}} +; CHECK-NOT:reg +; CHECK: Filtering for use +target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" +target triple = "x86_64-unknown-freebsd9" + +%struct.snork = type { %struct.fuga, i32, i32, i32, i32, i32, i32 } +%struct.fuga = type { %struct.gork, i64 } +%struct.gork = type { i8*, i32, i32, %struct.noot* } +%struct.noot = type opaque +%struct.jim = type { [5120 x i8], i32, i32, [2048 x i8], i32, [256 x i8] } + +@global = external global %struct.snork, align 8 +@global1 = external hidden unnamed_addr constant [52 x i8], align 1 +@global2 = external hidden unnamed_addr constant [18 x i8], align 1 +@global3 = external hidden global %struct.jim, align 32 +@global4 = external hidden unnamed_addr constant [40 x i8], align 1 + +declare void @snork(...) nounwind + +declare fastcc void @blarg() nounwind uwtable readonly + +define hidden fastcc void @boogle() nounwind uwtable { +bb: + %tmp = trunc i64 0 to i32 + %tmp1 = icmp slt i32 %tmp, 2047 + %tmp2 = add i32 0, -1 + %tmp3 = icmp ult i32 %tmp2, 255 + %tmp4 = and i1 %tmp1, %tmp3 + br i1 %tmp4, label %bb6, label %bb5 + +bb5: ; preds = %bb + tail call void (...)* @snork(i8* getelementptr inbounds ([52 x i8]* @global1, i64 0, i64 0), i32 2021) nounwind + tail call void (...)* @snork(i8* getelementptr inbounds (%struct.jim* @global3, i64 0, i32 3, i64 1), i32 -2146631418) nounwind + unreachable + +bb6: ; preds = %bb + tail call void @zot(i8* getelementptr inbounds (%struct.jim* @global3, i64 0, i32 5, i64 0), i8* getelementptr inbounds (%struct.jim* @global3, i64 0, i32 3, i64 1), i64 undef, i32 1, i1 false) nounwind + %tmp7 = getelementptr inbounds %struct.jim* @global3, i64 0, i32 5, i64 undef + store i8 0, i8* %tmp7, align 1 + %tmp8 = add nsw i32 0, 1 + %tmp9 = sext i32 %tmp8 to i64 + %tmp10 = add i64 %tmp9, 1 + %tmp11 = getelementptr inbounds %struct.jim* @global3, i64 0, i32 3, i64 %tmp10 + %tmp12 = sub i64 2047, %tmp9 + %tmp13 = icmp eq i32 undef, 1 + br i1 %tmp13, label %bb14, label %bb15 + +bb14: ; preds = %bb6 + tail call fastcc void @blarg() + unreachable + +bb15: ; preds = %bb6 + %tmp16 = trunc i64 %tmp12 to i32 + br label %bb17 + +bb17: ; preds = %bb26, %bb15 + %tmp18 = phi i64 [ %tmp28, %bb26 ], [ 0, %bb15 ] + %tmp19 = phi i32 [ %tmp29, %bb26 ], [ 0, %bb15 ] + %tmp20 = trunc i64 %tmp18 to i32 + %tmp21 = icmp slt i32 %tmp20, %tmp16 + br i1 %tmp21, label %bb22, label %bb32 + +bb22: ; preds = %bb17 + %tmp23 = getelementptr inbounds %struct.jim* @global3, i64 0, i32 3, i64 0 + %tmp24 = load i8* %tmp23, align 1 + %tmp25 = icmp eq i8 %tmp24, 58 + br i1 %tmp25, label %bb30, label %bb26 + +bb26: ; preds = %bb22 + %tmp27 = icmp eq i8 %tmp24, 0 + %tmp28 = add i64 %tmp18, 1 + %tmp29 = add nsw i32 %tmp19, 1 + br i1 %tmp27, label %bb32, label %bb17 + +bb30: ; preds = %bb22 + %tmp31 = icmp ult i32 undef, 255 + br i1 %tmp31, label %bb33, label %bb32 + +bb32: ; preds = %bb30, %bb26, %bb17 + tail call void (...)* @snork(i8* getelementptr inbounds ([52 x i8]* @global1, i64 0, i64 0), i32 2038) nounwind + tail call void (...)* @snork(i8* %tmp11, i32 -2146631418) nounwind + unreachable + +bb33: ; preds = %bb30 + tail call void @zot(i8* getelementptr inbounds (%struct.jim* @global3, i64 0, i32 5, i64 0), i8* %tmp11, i64 undef, i32 1, i1 false) nounwind + %tmp34 = getelementptr inbounds %struct.jim* @global3, i64 0, i32 5, i64 undef + store i8 0, i8* %tmp34, align 1 + %tmp35 = add nsw i32 %tmp19, 1 + %tmp36 = sext i32 %tmp35 to i64 + %tmp37 = add i64 %tmp36, %tmp10 + %tmp38 = getelementptr inbounds %struct.jim* @global3, i64 0, i32 3, i64 %tmp37 + %tmp39 = sub i64 %tmp12, %tmp36 + br i1 false, label %bb40, label %bb41 + +bb40: ; preds = %bb33 + br label %bb41 + +bb41: ; preds = %bb40, %bb33 + %tmp42 = trunc i64 %tmp39 to i32 + br label %bb43 + +bb43: ; preds = %bb52, %bb41 + %tmp44 = phi i64 [ %tmp53, %bb52 ], [ 0, %bb41 ] + %tmp45 = phi i32 [ %tmp54, %bb52 ], [ 0, %bb41 ] + %tmp46 = trunc i64 %tmp44 to i32 + %tmp47 = icmp slt i32 %tmp46, %tmp42 + br i1 %tmp47, label %bb48, label %bb58 + +bb48: ; preds = %bb43 + %tmp49 = add i64 %tmp44, %tmp37 + %tmp50 = load i8* undef, align 1 + %tmp51 = icmp eq i8 %tmp50, 58 + br i1 %tmp51, label %bb55, label %bb52 + +bb52: ; preds = %bb48 + %tmp53 = add i64 %tmp44, 1 + %tmp54 = add nsw i32 %tmp45, 1 + br i1 undef, label %bb58, label %bb43 + +bb55: ; preds = %bb48 + %tmp56 = add i32 %tmp45, -1 + %tmp57 = icmp ult i32 %tmp56, 255 + br i1 %tmp57, label %bb59, label %bb58 + +bb58: ; preds = %bb55, %bb52, %bb43 + tail call void (...)* @snork(i8* getelementptr inbounds ([52 x i8]* @global1, i64 0, i64 0), i32 2055) nounwind + tail call void (...)* @snork(i8* %tmp38, i32 -2146631418) nounwind + br label %bb247 + +bb59: ; preds = %bb55 + %tmp60 = sext i32 %tmp45 to i64 + tail call void @zot(i8* getelementptr inbounds (%struct.jim* @global3, i64 0, i32 5, i64 0), i8* %tmp38, i64 %tmp60, i32 1, i1 false) nounwind + %tmp61 = getelementptr inbounds %struct.jim* @global3, i64 0, i32 5, i64 %tmp60 + store i8 0, i8* %tmp61, align 1 + %tmp62 = add nsw i32 %tmp45, 1 + %tmp63 = sext i32 %tmp62 to i64 + %tmp64 = add i64 %tmp63, %tmp37 + %tmp65 = sub i64 %tmp39, %tmp63 + %tmp66 = icmp eq i32 undef, 2 + br i1 %tmp66, label %bb67, label %bb68 + +bb67: ; preds = %bb59 + tail call fastcc void @blarg() + unreachable + +bb68: ; preds = %bb59 + switch i32 undef, label %bb71 [ + i32 0, label %bb74 + i32 -1, label %bb69 + ] + +bb69: ; preds = %bb68 + tail call void (...)* @snork(i8* getelementptr inbounds ([52 x i8]* @global1, i64 0, i64 0), i32 2071) nounwind + %tmp70 = load i32* getelementptr inbounds (%struct.snork* @global, i64 0, i32 2), align 4 + unreachable + +bb71: ; preds = %bb68 + %tmp72 = load i32* getelementptr inbounds (%struct.snork* @global, i64 0, i32 4), align 4 + %tmp73 = icmp eq i32 undef, 0 + br i1 %tmp73, label %bb247, label %bb74 + +bb74: ; preds = %bb71, %bb68 + %tmp75 = trunc i64 %tmp65 to i32 + br label %bb76 + +bb76: ; preds = %bb82, %bb74 + %tmp77 = phi i64 [ %tmp84, %bb82 ], [ 0, %bb74 ] + %tmp78 = phi i32 [ %tmp85, %bb82 ], [ 0, %bb74 ] + %tmp79 = trunc i64 %tmp77 to i32 + %tmp80 = icmp slt i32 %tmp79, %tmp75 + br i1 %tmp80, label %bb81, label %bb87 + +bb81: ; preds = %bb76 + br i1 false, label %bb86, label %bb82 + +bb82: ; preds = %bb81 + %tmp83 = icmp eq i8 0, 0 + %tmp84 = add i64 %tmp77, 1 + %tmp85 = add nsw i32 %tmp78, 1 + br i1 %tmp83, label %bb87, label %bb76 + +bb86: ; preds = %bb81 + br i1 undef, label %bb88, label %bb87 + +bb87: ; preds = %bb86, %bb82, %bb76 + unreachable + +bb88: ; preds = %bb86 + %tmp89 = add nsw i32 %tmp78, 1 + %tmp90 = sext i32 %tmp89 to i64 + %tmp91 = add i64 %tmp90, %tmp64 + %tmp92 = sub i64 %tmp65, %tmp90 + br i1 false, label %bb93, label %bb94 + +bb93: ; preds = %bb88 + unreachable + +bb94: ; preds = %bb88 + %tmp95 = trunc i64 %tmp92 to i32 + br label %bb96 + +bb96: ; preds = %bb102, %bb94 + %tmp97 = phi i64 [ %tmp103, %bb102 ], [ 0, %bb94 ] + %tmp98 = phi i32 [ %tmp104, %bb102 ], [ 0, %bb94 ] + %tmp99 = trunc i64 %tmp97 to i32 + %tmp100 = icmp slt i32 %tmp99, %tmp95 + br i1 %tmp100, label %bb101, label %bb106 + +bb101: ; preds = %bb96 + br i1 undef, label %bb105, label %bb102 + +bb102: ; preds = %bb101 + %tmp103 = add i64 %tmp97, 1 + %tmp104 = add nsw i32 %tmp98, 1 + br i1 false, label %bb106, label %bb96 + +bb105: ; preds = %bb101 + br i1 undef, label %bb107, label %bb106 + +bb106: ; preds = %bb105, %bb102, %bb96 + br label %bb247 + +bb107: ; preds = %bb105 + %tmp108 = add nsw i32 %tmp98, 1 + %tmp109 = sext i32 %tmp108 to i64 + %tmp110 = add i64 %tmp109, %tmp91 + %tmp111 = sub i64 %tmp92, %tmp109 + br i1 false, label %bb112, label %bb113 + +bb112: ; preds = %bb107 + unreachable + +bb113: ; preds = %bb107 + %tmp114 = trunc i64 %tmp111 to i32 + br label %bb115 + +bb115: ; preds = %bb121, %bb113 + %tmp116 = phi i64 [ %tmp122, %bb121 ], [ 0, %bb113 ] + %tmp117 = phi i32 [ %tmp123, %bb121 ], [ 0, %bb113 ] + %tmp118 = trunc i64 %tmp116 to i32 + %tmp119 = icmp slt i32 %tmp118, %tmp114 + br i1 %tmp119, label %bb120, label %bb125 + +bb120: ; preds = %bb115 + br i1 undef, label %bb124, label %bb121 + +bb121: ; preds = %bb120 + %tmp122 = add i64 %tmp116, 1 + %tmp123 = add nsw i32 %tmp117, 1 + br i1 false, label %bb125, label %bb115 + +bb124: ; preds = %bb120 + br i1 false, label %bb126, label %bb125 + +bb125: ; preds = %bb124, %bb121, %bb115 + unreachable + +bb126: ; preds = %bb124 + %tmp127 = add nsw i32 %tmp117, 1 + %tmp128 = sext i32 %tmp127 to i64 + %tmp129 = add i64 %tmp128, %tmp110 + %tmp130 = sub i64 %tmp111, %tmp128 + tail call fastcc void @blarg() + br i1 false, label %bb132, label %bb131 + +bb131: ; preds = %bb126 + unreachable + +bb132: ; preds = %bb126 + %tmp133 = trunc i64 %tmp130 to i32 + br label %bb134 + +bb134: ; preds = %bb140, %bb132 + %tmp135 = phi i64 [ %tmp141, %bb140 ], [ 0, %bb132 ] + %tmp136 = phi i32 [ %tmp142, %bb140 ], [ 0, %bb132 ] + %tmp137 = trunc i64 %tmp135 to i32 + %tmp138 = icmp slt i32 %tmp137, %tmp133 + br i1 %tmp138, label %bb139, label %bb144 + +bb139: ; preds = %bb134 + br i1 false, label %bb143, label %bb140 + +bb140: ; preds = %bb139 + %tmp141 = add i64 %tmp135, 1 + %tmp142 = add nsw i32 %tmp136, 1 + br i1 false, label %bb144, label %bb134 + +bb143: ; preds = %bb139 + br i1 false, label %bb145, label %bb144 + +bb144: ; preds = %bb143, %bb140, %bb134 + br label %bb247 + +bb145: ; preds = %bb143 + %tmp146 = add nsw i32 %tmp136, 1 + %tmp147 = sext i32 %tmp146 to i64 + %tmp148 = add i64 %tmp147, %tmp129 + %tmp149 = sub i64 %tmp130, %tmp147 + switch i32 0, label %bb152 [ + i32 0, label %bb150 + i32 16, label %bb150 + i32 32, label %bb150 + i32 48, label %bb150 + i32 64, label %bb150 + i32 256, label %bb150 + i32 4096, label %bb150 + ] + +bb150: ; preds = %bb145, %bb145, %bb145, %bb145, %bb145, %bb145, %bb145 + %tmp151 = trunc i64 %tmp149 to i32 + br label %bb153 + +bb152: ; preds = %bb145 + unreachable + +bb153: ; preds = %bb160, %bb150 + %tmp154 = phi i64 [ %tmp161, %bb160 ], [ 0, %bb150 ] + %tmp155 = phi i32 [ %tmp162, %bb160 ], [ 0, %bb150 ] + %tmp156 = trunc i64 %tmp154 to i32 + %tmp157 = icmp slt i32 %tmp156, %tmp151 + br i1 %tmp157, label %bb158, label %bb166 + +bb158: ; preds = %bb153 + %tmp159 = add i64 %tmp154, %tmp148 + br i1 false, label %bb163, label %bb160 + +bb160: ; preds = %bb158 + %tmp161 = add i64 %tmp154, 1 + %tmp162 = add nsw i32 %tmp155, 1 + br i1 false, label %bb166, label %bb153 + +bb163: ; preds = %bb158 + %tmp164 = add i32 %tmp155, -1 + %tmp165 = icmp ult i32 %tmp164, 255 + br i1 %tmp165, label %bb167, label %bb166 + +bb166: ; preds = %bb163, %bb160, %bb153 + unreachable + +bb167: ; preds = %bb163 + %tmp168 = add nsw i32 %tmp155, 1 + %tmp169 = sext i32 %tmp168 to i64 + %tmp170 = add i64 %tmp169, %tmp148 + %tmp171 = sub i64 %tmp149, %tmp169 + br i1 false, label %bb173, label %bb172 + +bb172: ; preds = %bb167 + unreachable + +bb173: ; preds = %bb167 + %tmp174 = trunc i64 %tmp171 to i32 + br label %bb175 + +bb175: ; preds = %bb181, %bb173 + %tmp176 = phi i64 [ %tmp183, %bb181 ], [ 0, %bb173 ] + %tmp177 = phi i32 [ %tmp184, %bb181 ], [ 0, %bb173 ] + %tmp178 = trunc i64 %tmp176 to i32 + %tmp179 = icmp slt i32 %tmp178, %tmp174 + br i1 %tmp179, label %bb180, label %bb186 + +bb180: ; preds = %bb175 + br i1 false, label %bb185, label %bb181 + +bb181: ; preds = %bb180 + %tmp182 = icmp eq i8 0, 0 + %tmp183 = add i64 %tmp176, 1 + %tmp184 = add nsw i32 %tmp177, 1 + br i1 %tmp182, label %bb186, label %bb175 + +bb185: ; preds = %bb180 + br i1 false, label %bb187, label %bb186 + +bb186: ; preds = %bb185, %bb181, %bb175 + unreachable + +bb187: ; preds = %bb185 + %tmp188 = add nsw i32 %tmp177, 1 + %tmp189 = sext i32 %tmp188 to i64 + %tmp190 = sub i64 %tmp171, %tmp189 + br i1 false, label %bb192, label %bb191 + +bb191: ; preds = %bb187 + unreachable + +bb192: ; preds = %bb187 + %tmp193 = trunc i64 %tmp190 to i32 + br label %bb194 + +bb194: ; preds = %bb200, %bb192 + %tmp195 = phi i64 [ %tmp201, %bb200 ], [ 0, %bb192 ] + %tmp196 = phi i32 [ %tmp202, %bb200 ], [ 0, %bb192 ] + %tmp197 = trunc i64 %tmp195 to i32 + %tmp198 = icmp slt i32 %tmp197, %tmp193 + br i1 %tmp198, label %bb199, label %bb204 + +bb199: ; preds = %bb194 + br i1 false, label %bb203, label %bb200 + +bb200: ; preds = %bb199 + %tmp201 = add i64 %tmp195, 1 + %tmp202 = add nsw i32 %tmp196, 1 + br i1 false, label %bb204, label %bb194 + +bb203: ; preds = %bb199 + br i1 undef, label %bb205, label %bb204 + +bb204: ; preds = %bb203, %bb200, %bb194 + unreachable + +bb205: ; preds = %bb203 + %tmp206 = add nsw i32 %tmp196, 1 + %tmp207 = sext i32 %tmp206 to i64 + %tmp208 = add i64 %tmp207, 0 + %tmp209 = sub i64 %tmp190, %tmp207 + br i1 %tmp13, label %bb210, label %bb211 + +bb210: ; preds = %bb205 + unreachable + +bb211: ; preds = %bb205 + %tmp212 = trunc i64 %tmp209 to i32 + %tmp213 = icmp slt i32 0, %tmp212 + br i1 false, label %bb215, label %bb214 + +bb214: ; preds = %bb211 + unreachable + +bb215: ; preds = %bb211 + %tmp216 = add i64 undef, %tmp208 + %tmp217 = sub i64 %tmp209, undef + br i1 false, label %bb218, label %bb219 + +bb218: ; preds = %bb215 + br label %bb219 + +bb219: ; preds = %bb218, %bb215 + %tmp220 = trunc i64 %tmp217 to i32 + br label %bb221 + +bb221: ; preds = %bb230, %bb219 + %tmp222 = phi i64 [ %tmp231, %bb230 ], [ 0, %bb219 ] + %tmp223 = phi i32 [ %tmp232, %bb230 ], [ 0, %bb219 ] + %tmp224 = trunc i64 %tmp222 to i32 + %tmp225 = icmp slt i32 %tmp224, %tmp220 + br i1 %tmp225, label %bb226, label %bb234 + +bb226: ; preds = %bb221 + %tmp227 = add i64 %tmp222, %tmp216 + %tmp228 = getelementptr inbounds %struct.jim* @global3, i64 0, i32 3, i64 %tmp227 + %tmp229 = load i8* %tmp228, align 1 + br i1 false, label %bb233, label %bb230 + +bb230: ; preds = %bb226 + %tmp231 = add i64 %tmp222, 1 + %tmp232 = add nsw i32 %tmp223, 1 + br i1 undef, label %bb234, label %bb221 + +bb233: ; preds = %bb226 + br i1 undef, label %bb235, label %bb234 + +bb234: ; preds = %bb233, %bb230, %bb221 + br label %bb247 + +bb235: ; preds = %bb233 + %tmp236 = add nsw i32 %tmp223, 1 + %tmp237 = sext i32 %tmp236 to i64 + %tmp238 = sub i64 %tmp217, %tmp237 + br i1 %tmp66, label %bb239, label %bb240 + +bb239: ; preds = %bb235 + unreachable + +bb240: ; preds = %bb235 + switch i32 0, label %bb244 [ + i32 0, label %bb241 + i32 1, label %bb241 + i32 4, label %bb241 + i32 6, label %bb241 + i32 9, label %bb241 + ] + +bb241: ; preds = %bb240, %bb240, %bb240, %bb240, %bb240 + %tmp242 = trunc i64 %tmp238 to i32 + %tmp243 = icmp slt i32 0, %tmp242 + br i1 false, label %bb246, label %bb245 + +bb244: ; preds = %bb240 + unreachable + +bb245: ; preds = %bb241 + unreachable + +bb246: ; preds = %bb241 + unreachable + +bb247: ; preds = %bb234, %bb144, %bb106, %bb71, %bb58 + ret void +} + +declare void @zot(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind